Diplommatina exserta Godwin-Austen 1886
- 1. University of Antwerp, Evolutionary Ecology Group, Universiteitsplein 1, B- 2610, Antwerp, Belgium. & Central Department of Zoology, Tribhuvan University, Kirtipur, Kathmandu, Nepal. & Corresponding author: prembudha @ yahoo. com
- 2. Natural History Museum, Cromwell Road, London, SW 7 5 BD, UK. & Email: f. naggs @ nhm. ac. uk
- 3. University of Antwerp, Evolutionary Ecology Group, Universiteitsplein 1, B- 2610, Antwerp, Belgium. & Royal Belgian Institute of Natural Sciences, Vautierstraat 29, B- 1000, Brussels, Belgium. & Email: thierry. backeljau @ naturalsciences. be
Description
Diplommatina exserta Godwin-Austen, 1886
Figs 3B, 9B
Diplommatina exserta Godwin-Austen, 1886: 184, pl. 49, figs 2, 2a.
Diplommatina (Diplommatina) exserta – Kobelt 1902: 432.
Diplommatina exserta – Gude 1921: 314. — Budha et al. 2015: 6.
DiagnosisMeasurements (n = 3): SH 3.4–3.5 mm, SW 1.7–1.8 mm, Wh 7.5. Dextral, apical whorls slowly increasing in size, resulting in a slender conical spire. Penultimate and body whorls nearly equal in width. Constriction between parietal lips of the peristome at AeP (Fig. 9B). Two parietalis: Prt1 long and strongly developed, gradually elevated inner side of the body whorl, Prt2 short (Fig. 3B3). Two vertical palatalis: Vpt1 stronger and close to the constriction,Vpt2 short. One long horizontal palatalis, touching the inner parietal lip (Fig. 9B). Columellaris strong. Columellar tooth prominent. Protoconch smooth, Wh 2.0, with minute evenly distributed pits, no radial ribs (Fig. 3B 1). Teleoconch with widely spaced radial ribs; 7–8 ribs/ 0.5 mm on the penultimate whorl; 8–10 ribs/ 0.5 mm on the body whorl towards the aperture (Fig. 3B 2, B 4). Ribs moderately prominent. Very fine spiral striation present. Umbilicus open. Aperture inversely C-shaped, due to the straight columellar edge of the lip. Peristome with two close lips; under high magnification 2–3 ribs seen between the two lips. Parietal wall of the aperture extending to nearly halfway up the body whorl.
Material examinedNEPAL: 4 shells, Siddha Cave, Tanahun, 695 m, 27.94544 N, 84.422244 E, 24 Oct. 2008, P.B. Budha and R. Devkota leg. (CDZMTU 024).
RemarksThe most similar species are Diplommatina exilis W.T. Blanford, 1863 from Myanmar (Hanley & Theobald 1876: pl. 119, fig.10) and D. pullula Benson, 1859 from “Rungun on the West of Darjiling” (Hanley & Theobald 1876: pl. 119, fig.7). Compared to D. exserta, the apical whorls are wider in D. pullula and more tumid in D. exilis.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Diplommatinidae
- Genus
- Diplommatina
- Kingdom
- Animalia
- Order
- Architaenioglossa
- Phylum
- Mollusca
- Scientific name authorship
- Godwin-Austen
- Species
- exserta
- Taxon rank
- species
- Taxonomic concept label
- Diplommatina exserta Godwin-Austen, 1886 sec. Budha, Naggs & Backeljau, 2017
References
- Godwin-Austen H. H. 1886. Land and freshwater Mollusca of India. Conchologia Indica 1 (5): 165 - 185.
- Kobelt W. 1902. Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. Mollusca: Cyclophoridae, Lief. 16. R. Friedlander und Sohn Verlag, Berlin.
- Gude G. K. 1921. The fauna of British India. Mollusca-III (Land operculates: Cyclophoridae, Truncatellidae, Assimineidae, Helicinidae). Today & Tomorrow's Printers & Publishers, New Delhi.
- Budha P. B., Naggs F. & Backeljau T. 2015. Annotated checklist of the terrestrial gastropods of Nepal. ZooKeys 492: 1 - 48. https: // doi. org / 10.3897 / zookeys. 492.9175
- Hanley S. & Theobald W. 1876. Conchologia Indica; being illustrations of the land and freshwater shells of British India. London. https: // doi. org / 10.5962 / bhl. title. 14456